Horizontal plastic welding machine for high volume production of filter modules. Embedding of filter material in plastic caps by means of infrared technology. Multi-stationary version with oscillating table technology for maximum cycle optimization and operator safety. Pneumatic drives with digital length control of the original pieces prior to starting the cycle as well as measurement and evaluation of the melting depth. Permanent tool cooling for continuous operation, emergency stop of the infrared components with automatic ray shielding in case of breakdowns.